Challenges for ΛCDM: An update
L Perivolaropoulos, F Skara - New Astronomy Reviews, 2022 - Elsevier
A number of challenges to the standard Λ CDM model have been emerging during the past
few years as the accuracy of cosmological observations improves. In this review we discuss …
few years as the accuracy of cosmological observations improves. In this review we discuss …
[HTML][HTML] A buyer's guide to the Hubble constant
Since the expansion of the universe was first established by Edwin Hubble and Georges
Lemaître about a century ago, the Hubble constant H_0 H 0 which measures its rate has …
Lemaître about a century ago, the Hubble constant H_0 H 0 which measures its rate has …
[HTML][HTML] A comprehensive measurement of the local value of the Hubble constant with 1 km s− 1 Mpc− 1 uncertainty from the Hubble Space Telescope and the SH0ES …
We report observations from the Hubble Space Telescope (HST) of Cepheid variables in the
host galaxies of 42 Type Ia supernovae (SNe Ia) used to calibrate the Hubble constant (H 0) …
host galaxies of 42 Type Ia supernovae (SNe Ia) used to calibrate the Hubble constant (H 0) …
[HTML][HTML] The Carnegie-Chicago Hubble program. VIII. An independent determination of the Hubble constant based on the tip of the red giant branch
WL Freedman, BF Madore, D Hatt, TJ Hoyt… - The Astrophysical …, 2019 - iopscience.iop.org
We present a new and independent determination of the local value of the Hubble constant
based on a calibration of the tip of the red giant branch (TRGB) applied to Type Ia …
based on a calibration of the tip of the red giant branch (TRGB) applied to Type Ia …
Large Magellanic Cloud Cepheid standards provide a 1% foundation for the determination of the Hubble constant and stronger evidence for physics beyond ΛCDM
We present an improved determination of the Hubble constant from Hubble Space
Telescope (HST) observations of 70 long-period Cepheids in the Large Magellanic Cloud …
Telescope (HST) observations of 70 long-period Cepheids in the Large Magellanic Cloud …
A distance to the Large Magellanic Cloud that is precise to one per cent
G Pietrzyński, D Graczyk, A Gallenne, W Gieren… - Nature, 2019 - nature.com
In the era of precision cosmology, it is essential to determine the Hubble constant empirically
with an accuracy of one per cent or better. At present, the uncertainty on this constant is …
with an accuracy of one per cent or better. At present, the uncertainty on this constant is …
Milky Way Cepheid standards for measuring cosmic distances and application to Gaia DR2: implications for the Hubble constant
Abstract We present Hubble Space Telescope (HST) photometry of a selected sample of 50
long-period, low-extinction Milky Way Cepheids measured on the same WFC3 F555W …
long-period, low-extinction Milky Way Cepheids measured on the same WFC3 F555W …
New parallaxes of galactic cepheids from spatially scanning the hubble space telescope: Implications for the hubble constant
We present new measurements of the parallax of seven long-period (≥ 10 days) Milky Way
(MW) Cepheid variables (SS CMa, XY Car, VY Car, VX Per, WZ Sgr, X Pup, and S Vul) using …
(MW) Cepheid variables (SS CMa, XY Car, VY Car, VX Per, WZ Sgr, X Pup, and S Vul) using …
A 2.4% determination of the local value of the Hubble constant
AG Riess, LM Macri, SL Hoffmann… - The Astrophysical …, 2016 - iopscience.iop.org
ABSTRACT We use the Wide Field Camera 3 (WFC3) on the Hubble Space Telescope
(HST) to reduce the uncertainty in the local value of the Hubble constant from 3.3% to 2.4 …
(HST) to reduce the uncertainty in the local value of the Hubble constant from 3.3% to 2.4 …
[图书][B] Science with the cherenkov telescope array
BS Acharya, I Agudo, I Al Samarai, R Alfaro, J Alfaro… - 2019 - air.uniud.it
Names: CTA Consortium (Organization) Title: Science with the Cherenkov Telescope
Array/by The CTA Consortium. Description: New Jersey: World Scientific, 2018.| Includes …
Array/by The CTA Consortium. Description: New Jersey: World Scientific, 2018.| Includes …